Justin Trudeau fails to mention Alberta in Canada Day 150 speech

To celebrate Canada’s 150th birthday, Prime Minister Justin Trudeau gave a speech to a cheering crowd in Ottawa Saturday, highlighting the diversity and kinship of all the provinces and territories.

However, he failed to mention one major Canadian province in his speech — Alberta.

READ MORE: Naheed Nenshi says outrage over Justin Trudeau’s perceived speech gaffe is ‘just silly’

“We may live in British Columbia, Yukon, the Northwest Territories, Saskatchewan, Manitoba, Nunavut, Ontario, Quebec, New Brunswick, Prince Edward Island, Nova Scotia or Newfoundland or Labrador…but we embrace that diversity while knowing in our hearts we are all Canadians,” he said during his speech at Rideau Hall.

WATCH: Prime Minister Justin Trudeau was quick to repair his mistake of not mentioning Alberta in his 150th birthday Canada Day speech.

0:16 Trudeau apologizes for failing to mention Alberta in Canada 150 speech

Within minutes of this, people took to social media to point out the mistake. Some saw it as a harmless mistake while others took it a little more to heart.

Trudeau went on Twitter and apologized to Albertans for the mistake.

WATCH: Canada celebrates its 150th birthday 

2:20 Canada celebrates its 150th birthday